package ifcase;

import java.util.Scanner;

public class Demo1 {
    public static void main(String[] args) {
        Scanner n=new Scanner(System.in);
        int age=n.nextInt();
        boolean b=false;
        //if -判断，（boolean表达式）
        if(age>18)
            System.out.println("进入");
    }
}
